Skip Top Navigation



Multilingual information

SR 520 Bridge Replacement and HOV Program


On Oct. 15, Governor Inslee and other key dignitaries marked the start of construction for the SR 520 West Approach Bridge North Project at a groundbreaking event. Construction is underway and the new structure is scheduled to open to drivers in summer 2017.

Enter Our Twitter Contest & Win a Piece of Seattle History
Between now and Monday, write a haiku to the "Ramps to Nowhere" and you could win an actual piece of the ramps! Details here.

Building a new and improved SR 520 corridor

The SR 520 Bridge Replacement and HOV Program will enhance safety by replacing the aging floating bridge and keep the region moving with vital transit and roadway improvements throughout the corridor.

The 12.8-mile highway begins at I-5 in Seattle and extends to SR 202 in Redmond.

SR 520 Projects - Click a project title for more information
SR 520 Projects - Click project titles for more information

Contact information:


Phone: 206-770-3500

Infoline: 1-888-520-NEWS (6397)

24-hour construction hotline: 206-708-4657

Twitter: @WSDOT_520

Mail: SR 520 Bridge Replacement and HOV Program
999 3rd Avenue, Suite 900
Seattle, WA 98104

Sign up for email updates about the SR 520 program

Questions about tolling?

Call 1-866-936-8246 or visit Good to Go!

Medina to SR 202: Eastside Transit and HOV ProjectPontoon Construction Project